Kindly check attached image for question Two methods have been developed to determine the nickel content of steel. In a sample offive replications of the first method on a certain kind of steel, the average measurement (inpercent) wasand the standard deviation wasSxThe averageofsevenx = 3.16= 0.042:replications of the second method wasand the standard deviation was= 3.24S, = 0.048a) Determine if there is a difference in the mean measurements between the two methodand explain the most likely assumption that could be made before solving thisproblem?b) What informed your choice of solution method?

Here, Using hypothesis testing, we conclude that there is a difference in the mean level of nickel…

Two methods have been developed to determine the nickel content of steel. In a sample of five replications of the first method on a certain kind of steel, the average measurement (in percent) was = 3.16 and the standard deviation was The average of seven S, = 0.042· replications of the second method was and the standard deviation was y = 3.24 %3D S, = 0.048 a) Determine if there is a difference in the mean measurements between the two method and explain the most likely assumption that could be made before solving this problem? b) What informed your choice of solution method?

Two methods have been developed to determine the nickel content of steel. In a sample of five replications of the first method on a certain kind of steel, the average measurement (in percent) was = 3.16 and the standard deviation was The average of seven S, = 0.042· replications of the second method was and the standard deviation was y = 3.24 %3D S, = 0.048 a) Determine if there is a difference in the mean measurements between the two method and explain the most likely assumption that could be made before solving this problem? b) What informed your choice of solution method?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Kindly check attached image for question

Two methods have been developed to determine the nickel content of steel. In a sample of
five replications of the first method on a certain kind of steel, the average measurement (in
percent) was
and the standard deviation was
Sx
The average
of
seven
x = 3.16
= 0.042:
replications of the second method was
and the standard deviation was
= 3.24
S, = 0.048
a) Determine if there is a difference in the mean measurements between the two method
and explain the most likely assumption that could be made before solving this
problem?
b) What informed your choice of solution method?

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CREATE TABLE ARTISTS( artist_id CHAR(30), artist_name CHAR(30), artist_pop INT(5), PRIMARY KEY (artist_id)); CREATE TABLE TRACKS( track_id CHAR(30), track_name CHAR(30), duration INTL(10), tempo REAL, PRIMARY KEY (track_id)); CREATE TABLE USERS( user_id CHAR(30), user_name CHAR(30), age INT(5), nationality CHAR(30), num_track_listened INT(10), PRIMARY KEY (user_id)); CREATE TABLE RECORD( artist_id CHAR(30), track_id CHAR(30), PRIMARY KEY (artist_id, track_id), FOREIGN KEY (artist_id) REFERENCES ARTISTS, FOREIGN KEY (track_id) REFERENCES TRACKS); CREATE TABLE LISTEN( user_id CHAR(30), track_id CHAR(30), PRIMARY KEY (user_id, track_id), FOREIGN KEY (user_id) REFERENCES USERS, FOREIGN KEY (track_id) REFERENCES TRACKS); CREATE TABLE FOLLOW( user_id CHAR(30), artist_id CHAR(30), follow_date datetime, PRIMARY KEY (user_id, artist_id) FOREIGN KEY (user_id) REFERENCES USERS, FOREIGN KEY (artist_id) REFERENCES ARTISTS); According to the six table, write a single SQL…